Bank Guarantees vs Suretyship
What is a Bank Guarantee?
A Bank Guarantee is a written undertaking by a bank (the guarantor) to pay a specified sum to a third party (the beneficiary) if the bank's customer (the principal/applicant) fails to fulfill their contractual obligations.
Two Fundamental Legal Structures
#### 1. Demand Guarantee (Independent Guarantee)
- Primary obligation of the guarantor bank
- The guarantor pays upon the beneficiary's first written demand, without requiring proof of the principal's default
- The bank cannot invoke the underlying contract between principal and beneficiary as a defense
- This is the standard form in international trade
- Governed by URDG 758 (ICC Uniform Rules for Demand Guarantees)
#### 2. Surety Bond / Accessory Guarantee
- Secondary obligation — the guarantor's liability is tied to the underlying contract
- The beneficiary must first prove the principal has actually defaulted
- The surety can invoke all defenses available to the principal
- More common in domestic construction contracts in common law countries
Key Distinction
| Feature | Demand Guarantee | Surety Bond |
|---|
| Type of obligation | Independent/Primary | Accessory/Secondary |
| Demand requirement | Written demand only | Must prove default |
| Bank can use principal's defenses | No | Yes |
| Governing rules | URDG 758 | Local law |
| Common in | International trade | Domestic projects |
The "Pay First, Argue Later" Principle
Demand guarantees operate on the principle that the guarantor pays first and the principal argues later in a separate legal proceeding. This makes demand guarantees very attractive to beneficiaries but potentially risky for principals (fraudulent demands).